Machine for making paper cups



R. HOLMAN MACHINE-FOR MAKING PAPER CUPS Filed March 4, 1922 15 Sheets-Sheet l Dec, 9, 1924. l

l R. HOLMAN MACHINE FOR MAKING PAPER CUPS Filed March 4, 1922 v1 5 'Sheets-Sheet 2 Dec. 9., 1.924-

` R. HoLMAN MACHINE FOR MAKING PAPER CUPS Filed March 4, 1922 15 sheets-sheet sv Dec. 9, 1924.

R. HOLMAN MACHINE FOR MAKING PAPER CUPS Filed March 4, 1922 Dec, 9, 1924.

1,518,261 R. HOLMAN MACHINE FOR MAKING PAPER CUPS Filed March 4, 1922 15 Sheets-Sheet 5 bym Dec. 9, 1924. 1,518,261 R.'HOLMAN 'MA-CHINE FOR MAKING PAPER CUPS` Filed March 4, 1922 l 15 Sheets-Sheet 6 Dec. 9, 1924- 1,518,261

R. HOLMAN MACHINEl FOR AMAKING PAPER CUPS Filed Maron 4, 1922 15 vsheds-sheet v ilf Dec. 9, 1924. 1,518,261

R. HOLMA N A MACHINE `FOR MAKING PAPER CUPS Dec. 9, 1924.-

R. HOLMAN MACHINE FSR Muffin@- U* ""'GR CUPS Filedzvzaf-@nf1,A 15 sheets-sheet Q Dec. 9, 1924. 1,5 E 8,261

' R. HQLMAN MACHINE FOR MAKING PAPER CUPS Filed March 4, 1922 15 Sheets-Sheet l0 2 HMI! R. HQLMAN MCHINE FOR MAKING PAPER CUPS Filed March 4, 1922 15 shets-sneet 11 mnfm l i k; Z5? M\ zj l/5 In f a 2/0 206W/J EN 211 Dec, 9, l 1 R. HOLMAN MACHINE FOR'MAKING PAPER CUPS 15 sheets-sheet 12 FiledkMarch 4, 1922 R. HOLMN MACHINE PoR MAKING PAPER cUPs Filed March 4, 1922 15 sheets-sheet 1a VE l E /dv IWA/a E\ ne@ 9; '1924;v f 1,518,261

R. HQLMAN 'MVACYI'IN FoR MAKING rAPER durs /ffi @ai 25 R. HOLMAN MACHINE FOR MAKING PAPER CUPS Filed March 4, 1922 l5 Sheets-Sheet l5- Patented Dec. 9; 1924.

UNITED STATES- PATENT4 OFFICE. ,Y

RUDOLPH HOLMAN, F CHICAGO, ILLINOIS, ASSIGNOR T0 THE VORTEX MFG. CO., 0F

CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS. I

MACHINE FOR MAKING PAPER CUPS.

Applicationy led March 4, 1922. Serial No. 540,961.

To all whom t 71u13/ concern.'

Be it known that I, RUDOLPH HoLMAN, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook `5 and State of Illinois, have invented certain new and useful Improvements in a Machine for Making Paper Cups; and I do hereby declare that the following is a full, clear, and exact description of the same, reference 10 being had to the accompanying drawings and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates more particularly to an improved type of a cup forming machine adapted to automatically produce fiat bottomed paper ycups from properly shaped paper blanks fed into the machine.

Itis an object of this invention to yprovide a. machine adapted to produce flat bottomed paper cups in large quantities.

It'is also an object of the invention to provide a power driven machine adapted to automatically assemble, form and plurality of blanks to one another to form a e5 liquid-tight flat-bottomed paper cup adapted to stand independently of a holder.

Another object of the invention is to pro vide a machine having mechanisms adapted to form a body blank around a bottom blank,

apply an adhesive to both the body blank and the bottom blank, seal' the overlapping margins of the bod blank and then bend and press portions o said body blank against the adhesived portion of the bottom blank tov form a flat bottomed paper c'up.

It is a further object of this invention to 'Y provide a machine adapted to automatically form a flat-bottomed paper cup adapted to be blown from a former when completed. l 40 It is furthermore an object of the invention to provide a cupforn'iing machine having a mechanism for feeding and holding a flat bottom blankagainst a formingmember while a. body blank is formed around the forming member and around the bottom blank and glued to said bottom blank toform a completed flat-bottomed cup.

It is an important object of this invention to provide an improved positively acting .50 automatic machine wherein a main driving shaft is equipped with a forming cone and 1S adapted to drive a cam shaft for operating mechanism at predetermined times whereby blanks are fedinto the machine,'treated with an adhesive and then formed and pressed against one another to produce a liquid-tight Hat-bottomed cup which when completed is adapted to be automatically released and blown from the forming cone.

Another important object of this invention is the construction of a cup forming machine having feeding mechanisms adapted to simultaneously apply a plurality of paper blanks to a forming cone, apply an adhesive to one of said blanks, form the other blank o5 around the rst blank and press parts ofthe second blank to the adhesived portions of the first blank, and then apply adhesive to one margin ,of the second blank to permit another margin thereof to be pressed against the adhesived margin to form a completed flat-bottomed cup.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

The invention (in a preferred form) is illustrated inl the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a front elevation of a machine for making paper vessels embodying the principles of this invention.

Figure 2 is a top plan view of the machine.

Figure 3 is a rear elevation of the machine with parts broken away and omitted.

Figure 4 is a sectional view taken on line 1 4 of Figure 1 with parts omitted and with parts broken away. 90

Figure 5 is a similar view showin'g the parts in a different position.

Figure 6 is an enlarged fragmentary view of the 4forming rolls infeoacting engagement and with vparts of the lcam shaft mechanism shown in section.

Figure 7 is 'an enlarged plan view of the main driving shaft mechanism and the main forming roll together with the glue applying mechanism for the body forms ofthe cups. v

Figure 8 is Ia detail plan view partly in section of the driving shaft. mechanism and the main forming cone.

Fi'gure 9 is a detail plan view of the cam shaft and the cams thereon.

-Figure 10 is a detail sectional view taken on line 10--10 of Figure 1 with parts broken away.V and with parts omitted.

Figure 11 is Kan enlarged fragmentary detail view of the lost motion takeup mechfor the cup bottoms taken on line 13-13 of Figure 2.

Figure 14 is a longitudinal detail section of the mechanisms shown in Figure 13 with parts in elevation. i

Figure 15 is a top plan View of the feed land pressing mechanisms for the cup bottoms shown in Figure 13.

Figure 16 is a sectional view taken on line 1G-16 of ,Figure 13 showing the operation 1n dotted lines and with parts moved into a different-position than illustrated in Figure 15. f

Figure 17 is a fragment-ary detail sectional View takenon line 17,-17 of Figure 7.

Figure 18 is a fragmentary detail section through the air valve mechanism taken on line 18- 18 of Figure 7' with parts shown 1n elevatlon. v

Figure 19 is a detail section through the glue distributing mechanism taken on line 19-19 of Figure 7.

Figure 20 is a front view of the glue tank.

Figure 21 is a sectional View taken on line 21- 21 of Figure 3.

Figure 22 is a sectional perspective view taken on line 22-22 of Figure l..

Figure 23 is a view taken on line 23-23 of Figure 15. I

Figure 24 is a perspective View taken on l1ne.24-24 of Figure 5 with parts omitted.

Figure 25 is an -enlarged fragmentary detail section taken on line 25-25 of Figure 2 With parts omitted and with parts shown in elevation i Figure 26 is an enlarged fragmentary del tail section taken longitudinally through the lthe form is being formed into a flat-bot'- tomed cup.

Figure 28 is a developed view f one of the cup body forms.

Figure 29 is a top plan view of a finished Hair-bottomed cup.

igure 30 is an enlarged bottom 1an View of a finished flat-bottomed cup. p

shaft bearing 5. Integrally formed on the opposite driving end of the machine frame 1 is an upright arm or head 6 having a cam shaft bearing 7 integrally formed thereon in alignment with the bearing 5. Formed integrally on the top of the arm 6 is a lower main shaft bearing section 8. Bolted upon the bearing section 8 isy an upper bearing section 9. Secured upon the top of the upper bearing section 9 is a plate 10 having a pair of apertured lugs 11 integrally formed thereon for supporting. a stub shaft or pin 12.

Rigidly secured by screws or other suitable means to the front side of the machine frame 1 is a table suppoiting bracket 13. Bolted at right angles to the front side oi the upper portion of the frame l is a horizontal feed carriage supporting arm orl beam 14 having forniedat each end thereof bearing arms 15 and 16. The bearing arms 15 at one side of the beam' Marepositioned at a higher elevation than thc bearing arms A16 on the other side of said beam. A flanged threaded carriage stop sleeve 21 is adjustably threaded into one of the bearing arms 16 and is held in a set position by a set screw 22, as shown in Figure 12. Rigidly secured to the outer end of the beam 14 is a table supporting bracket 17. Supported upon the horizontal arms of the brackets 13 and 17 is a stock supporting stationary table 18. one corner of which is deflecteddownwardly to afford an inclined feed apron 19 for cup body blanks. A stock table extension 20 is supported upon the bracket 13 to the inside of the table 18 to which it lis secured. The table extension plate 20 is shorter than the table 18 and terminates at the apron 19 as illustrated in Figure 2.

Also supported on the top of the machine frame 1 is a bearing 23 having a removable top bearing section 24 secured thereon. Integral with the top bearing section 24 are two upwardly inclined guide bars 25. Journalled in the bearings 8 9 and 23v-24 is a 'l main driving shaft 26 havingmounted on the outer projecting end thereof an idler driving pulley 27 and a driven pulley 28. The pulley 28 is keyed to the shaft 26. The,

- pulley 27 is adapted to be driven by means of a belt from any suitable source of power. A manually controlled clutch mechanism (not shown) is provided for locking the pulley 28 with the pulley 27 in the ordinary manner to permit a drive to be imparted to the main shaft 2 6 of the machine.

Adjustably engaged on the main shaft 26 to the outside of the bearing ,8 9 is a driving gear 29 having a lug 30 formed on the outer side thereof. Lugs 31 are formed on thepulley 28 and have adjusting screws 32 projecting therethrough to 'contact the gear lug .30 to permit adjustment of the gear 29 relative to the shaft 26 and the pulley 28.

Formed on the inner end of the main shaft 26 is a, main cup forming frustumshaped roller or cone 33 having a flat circular end surface v34. The inner endpor' ltion of the main shaft 26 and the frustum i A cup gripping-bell crank finger 38 is pivotally mounted between a pair of lu s 39 formed on the enlarged end of theione 33. Formed on the face of the colla-r 36 nearest the cone 33 are a pair of spaced guide lugs 4() between which one end of a link 41 is pivoted. The other end of the link 41 is pivoted to the bell crank gripping finger 38.

rollers'42 which are rotatably mounted on the long arms of a pairof/bell cranks 43. The bell cranks' 43 are pivot-ally supported on the opposite sides of the vbearing section 23. Pivotally connected to the short arms of the bell cranks 43 are the ends'of two connecting rods 44.

@Secured on the main shaft 26 adjacent the bearing section 23 is a. beveled driving gear 45. Mounted on the main shaft 26 adjacent the packed hubh of the gear 45 is a sleeve 46 having a circular air chamber or recess 47 therein communicating with an auxiliary radial passage 48 in the main f shaft 26 at the inner end of the long passage 35, as illustrated in Figures 8 and 18. Seated in the reduced end ofthe sleeve 46 is a packinging 49 held in place by a flanged collar 50 on the main shaft 26. Coiled springs 51 are engaged between the collar 5() and the bearing `8-7-9. Connected with the sleeve`46 to communicate'with the air chamber 47 is one end of an air pipe 52, the other end of which is connected with the air outlet chamber 53l of an air valve casing 5,4, as shown in Figure 18. The air valve casing 54 is mounted upon the front side of the machine frame 1 to have compressed air, from vany convenient sourceysupplied through a pipe con- .nected With an air intake chamber 55m the valve casing 54.l Slidably engaged in Engaging the beveled surlface of the slidablecollar are `two beveled and is adapted l the valve casing 54 is a valve stem 56 having a valve 57 mounted thereon within the chamber 55. A spring 58 in the chamber 55 acts `to hold. the valve 57 seated in a valve seat 59 provided within/,the casing. 70

The lower end of the air valve stem V56 projects from the lower end of the casing 54 and contacts the short arm 60 sof a bell Crank 61. The Ibell crank 61 is pivotally mounted on the machine frame 1 and has 75 a roller 62 rotatably engaged on the end of the long aljm thereof.

Journalled 1n the machifn'e"lf-rame bear- -ings 5 and 7 is a cam shaft 63 having a large gear 64 secured on one end thereof in mesh 80 with the driving gear 29 on the main shaft. Also secured on the cam shaft 63 adjacent the inner end of thebearing 7 is a drum 65 having formed onthe periphery thereof a V-shaped flange cam 66 in Figure 9. Mounted on the perlphery of the cam drum' 65 is a curved plate 67 having a curved cam 68 integral therewith an'd projecting beyond the inner end of the drum 65 in the path of the roller 62 90 on the air valve control bell crank 61, as shown in Figure 18. Secured on the cam shaft 63 adjacent the hub of the drum 65 is a collar 69 having integrally formed I thereon an'outwardly projecting arm 70 on 95 the' end of which a roller 71 is rotatably mounted. Rigidly mounted on the cam shaft 63 adjacent the collar 69 is a collar 72 having a cam 73 integrally formed thereon. v A guide collar 74 of reduced diameter 100 is mounted on the cam shaft 63 adjacent the cam 73. An enlarged retaining ring or collar -7 5 is secured to the cam shaft for holding the guide collar 74 in place. Also secured on -thecam shaft 63 to the out- 105 side 'of the retainingvcollar 75 and spaced therefrom is the lcollar or hub 76 of an eccentric 77. Engaged around the eccentric 77 is a split ring 78 having an eccentric arm or rod- 79 integrally' formed on one of 110 the ring sectionsi The outer end of the eccentric rod 79 is pivotally connected to the upper en'd of a lever 80, the lower end of which is pivotally engagedv von a bolt 81 supported by a 115 bracket 82 whichis secured to the frontu side' of the machine frame 1. Integrally formedon the upper end of the lever 8O is a lug or finger 83 positioned lbetween a coiled spring 84 and an adjustable bolt 85 120 (see Figure 11). One end of the spring 84 is seated in a recess in the lever lug 84, while the other end is seated in a recess pro'-l vided in a boss 86 integrally formed on one side of the middle portion of a long offset 125 carriage actuating arm or lever 87. Also integrally formed on the same side of the actuatinglever 87 is an internally -/threaded boss 89 for adjustably supporting the screw bolt m85. The

clearly disclosed mechanism/shown 1n Figure 130 11 is adapted to take up lost motion.` .The lower end of the actuating lever 87 is 'pivotally engaged on the Ibolt 81. Pivotally lconnected to the upper end of the-lever 87 is 'one end of a link 90, the other end of which :is pivotally connected to a' pin 91 supported by a pair of lugs 92 integrally formed on one end of a blank-.feed carnriage 93. The feed carriage 93 is rigidly secured on a pair vof parallel slidable guide rods 94 and 95 which are respectivelyl supported at` different elevations to slide in the bearing arms i which an auxiliary shaft 99`is journalled. Integrally formed on the inner or lower end 'of the shaft 99 is afrustum-shaped presser roller or cone *10,0 having an integral beveled pressing flange 101 at thel reduced end thereof provided with a beveled surface.

` Fixed upon the shaft 99 is a beveled. gear 102 which mesheswith the' bevel gear 45 on the drive shaft 63., Thev teeth of the bevel gears and 102 are extra long lto permit` the same to remain in driving relation to one another even when they are slightly separated, which occurs when the shaft 99 is swung upwardly to allow a completed cup on the forming cone 33 to be ejected as hereinafter described. The pivotally mounted yoke frame 98 is positioned between the two guide bars 25 to be guided thereby when said yoke frame is swung upwardly and downwardly about the pivot pin 12. v

Rigidly secured upon the -pivoted yoke frame 98 is a head 103 to which one end of a" longitudinally slotted bar or rod 104 is secured. A-scraping knife or blade 105 is adjustably engagedin the slotted barA 104 and is held in contact with the'peripheral `surface ofthe upper or auxiliary Icup forming presser cone 100, by-1n eans of an adjusting screw 106 positioned in a box 107 'supported on the projecting bar 104. l Rig- -idlybolted to the outer lend of the projectring bar 104 is a downwardly directed bracket arm 108 having a inishing presser finger 109 secured thereon ada ted 'to be positioned adjacent the end sur ace 34 of the main cup forming cone 33 when the yoke i' frame 98 is in its lowered position, as shown .in Figure 5.

Extending transversely through .the yoke j y'trame 98 is a shaft or bolt 110 on the projectingends-of which the upper ends of the two connecting rods 44 are pivotally enfgaged. Also pivotally engaged on the shaft 110 to the inside vof the connecting rods 44 are the upper ends of two rods 111. 'The lower ends of the rods 111 are connected to .the upperfend of a forked bar'4112 which projects downwardly through an opening 113 in the top of the machme frame 1, as shown in Figure 6, and `engages over the guideV collar 74.' Rotatably supported on one side ofthe forked bar 112 is a roller 114 which is'disposed above and in the plane of operation ofthe cam 73 to cause the yoke frame 98 to be swung upwardly yabout the pivot pin 12 to move the presser cone 100 away from the main forming cone 33.

Secured on the front side of the machine frame 1 4is a bracket 115 having pivotally supported thereon a bell crank member comprising aAshort arm 116 and a long downwardly andinwardly curved tapered cani arm 117, as shown in Figure 17. A spring 219 is connected to the machine frame 1 and to the short bell crank arm 116. The bell crank cam arm 117 is disposed in the plane ofy the roller 71 supported on the arm 70 of thelcam shaft collar 69, to permit the bell Vcrank 116-117 to be actuated once during each revolution of the cam shaft 63. Pivot- .ally attached to the end of the short bell crank arm 116 is the lower end of a connecting rod 118', the upper end of which is pivotally connectedto o ne end of a short lever 119. The other end of the lever 119 is pivoted onthe lower end of the yokeframe 98. Pivoted upon the bracket arm 108 is an arm 120 vwhich is rigidly connected to\ the lever 119 'by means of a hood or shield 121. Rotatably supported on the lever 119 and the arm 120 beneath the shield 121 is a presser roller 122 adapted when lowered to epress the end margin of a cup blank form into contact with an adhesive applying frustum cone 123.

The adhesive applying roller or cone 123 is rotatably supported in a glue or adhesive containing box 4124 which is mounted upon the top of' one corner of the machine frame 1 at an angle thereto and projecting beyond the edges thereof, as illustrated in Figure 7. A shield or apron 125 is mounted upon the top of the glue box 124 and curves upwardly to project over a.. portion ofthe adhesive applying cone 123. A longitudinal opening 126 is thus left Vin the'box 124 exposing a portion of the adhesive applying cone 123, as shown in Figure 19. 'A hot water or steam chamber 127 is provided in the box 124 around an inner glue holding pot or box 128 which `holds the glue. The heat from the chamber 127 serves to keep the. glue or other adhesive used in a soft liquid form.

Journalled longitudinally in the boxes 124 and 128`is a shaft 129 having a gearwith the main shaft bevel gear 45 to receive a drive therefrom. The gears'131 and 132 are rotatably supported on a bracket 133 fixed on the top of the machine frame 1. Mounted on the shaft 129 within the inner glue box 128 is a large glue distributing drum or roll 134. Journalled in the glue box 128 is an intermediate roll 135 which is in rolling engagement with both the large glue roll 134 and with the glue applying cone 123, as shown in Figure 19, so that glue from the box 128 is fed by the large roll 134 to the intermediate roll 135 and then to the glue applying cone 123 against which the end margin of each body cup blank is pressed by the presser roll 122.

The inner glue box 128 has an extension which projects through one end of the outer box or housing 124 and has an opening 136 cut therein, as illustrated in Figure 20. Formed on the extension of the glue box 128 is a stationary hub or collar 137 having a notch 138 cut therein. Formed on the extension of the glue box 128 is a cam strip 139. Rotatably engaged on the projecting end of the shaft 129 is the hub 140 of a bell crank 141. The bell crank hub 14() has integrally formed thereon a projecting dog 142 having any inclined edge adapted to coact with an inclined edge of the -notch 138. A coiled spring 143 is engaged on the projecting end of the shaft 129 between the bell crank hub 140 and a head 144 fixed on the end of said shaft 129.

Mounted on the short arm of the bell crank 141 is a roller 145 adapted to coact with the cam strip 139 on the extension of the glue box 128. Pivotally connected to the short arm of the bell crank 141 is one end of a rod 146, the other end of which projects through a flange 147 on the carriage 93. A collar 148 is fixed on the projecting end of the rod 146. Engaged around the rod 146 between the 'carriage 147 and a fixed collar 225 is a coiled spring 226. Rotatably mounted on the long armof the bell crank 141 is a beveled glue distributing disk 149 adapted when the long arm of the bell crank .141 is in an elevated position to project through the box yextension opening 136 into contact with the large glue feed roller 134. Glue is thus supplied to the'bevele'd'edge of the disk 149 and is adapted to be applied to a cup bottom blank held against the reduced end of the main forming cone 33.

Rotatably mounted on the front side of the arm 4 of the machine frame 1 is a two arm 'yoke or U-shaped member 150 supporting apin on which the lower end of a latch lever 151 is pivotally engaged between the arms of said yoke. A return spring 228 is connected to the lever 151 and to the machine frame. A beveled head or flange 152 is integrally formed at right angles on'the upper end of the latch lever 151 to engage over the long arm of the bell crank 141 to hold the bell crank in a tipped or lower position, as shown in Figure 4. Pivotally connected with the latch lever'15l is one end of a connecting rod 153, the other end of which slidably projects through an opening in the carriage liange 147 and has a collar 154 fixed thereon. The connecting rod 153 is longerv than the rod 146 so that when the carriage 93 returns from a feeding operation the rod 146 will act to trip the bell crank 141 before the rod 153 will pull the latch lever 151 into locking engagement over the long arm -of the bell crank 141.

A cup bottom blank feed mechanism is also provided and s operable by the cam flange 66 on the cam shaft drum 65. Fixed on one of the rear frame legs 2 is a bracket 155 on which is pivotally supported the lower end of a long lever 156 having a return spring 227 engaged with the lower end thereof. Rotatablysupported on the inner surface of the lever 156 is a roller 157 positioned in the path of action of the cam Bange 66 on the drum 65 so that the lever 156 will be swung back and forth about the lower pivoted end thereof. 'Pivotally connected to the upper end of the lever 156 is -one end of a long operating rod 158. The

upper end of the lever projects behind a guide strap 159 secured on the rear side of the machine frame 1 and spaced therefrom by blocks 160.

The other`end of the rod 158 is pivoted 011 a pin 161 supported by apertured lugs 162 which are formed on the lower end of a bolt 163 rotatably engaged through one end of a curved arm 164. Fixed on a projection on the swinging arm 164 is an upwardly projecting finger -or bar 165. Integrally formed on the ends of the machine frame arms 3 and 4 are split rings or collars 166 and 167 respectively provided with clamping screws 168. Supported by the clamping rings 166 and 167 is a vertlcal shaft 169 having a lock ring or collar 170 engaged on a. threaded portion thereof above the split rm posltion'of adjustment. Rotatably engaged on the 'upper projecting end of the vertical shaft 169 is a casting or block 171 rotatably supporting a bolt,172 on the lower end of which thecurved arm 164 is engaged. I ntegrally formed on the block 171 is an extension 173 having a downwardly directed flange .174 on the inner end thereof below a 'sleeve 175. The sleeve 175 is provided with a chamber 176 and with a transverse bottom blank receiving slot 177. A passage 178 is provided in the block extension 173 and communicates with the sleeve chamber 176.

Slidably engaged in the block extension passage 178 is a stem or plunger rod 179 which projects into the sleeve chamber 17 6 166 to hold the shaft 169 in a vertical 

